|
diamond-shaped |
= rhomboid |
solid shape |
|
Transversely square, broadest and longitudinally angular at the middle, regularly attenuate to angular ends, all faces essentially plane; like the stylized shape of a diamond. |
|
dialysepalous |
= aposepalous, chorisepalous, polysepalous |
architecture |
flower, perianth, calyx |
Having two or more distinct sepals; having the sepals unfused. |
|
dialypetalous |
= apopetalous, choripetalous, polypetalous |
architecture |
flower, perianth, corolla |
Having two or more distinct petals; having the petals unfused. |
|
diacytic |
= caryophyllaceous |
architecture |
stomate |
Having two subsidiary cells that together surround it, their common wall oriented perpendicular to its long axis. |
|
dextrorse |
= rightward |
orientation |
|
Directed to the right, relative to the direction of growth along an explicit or implicit axis of reference. See also sinistrorse (leftward). |
|
development |
= ontogeny |
CHARACTER |
|
Mode or pattern of growth and differentiation. |
|
determinate |
|
development |
|
Having the terminal (central, apical, or distal) portion differentiating first and the lateral (peripheral, basal, or proximal) portions later, development thus proceeding sequentially downward or outward, growth of the whole thereby organizationally limited. |
|
descending |
= downcurved |
orientation |
lateral structure |
Salient at its base and then curving downward or backward. |
|
derivation |
|
CHARACTER |
|
Ontogenetic origin. |
|
depressed |
< flattened |
solid shape |
|
Flattened distally, perpendicular to the longitudinal axis, as though pressed from the top, the external surface otherwise basically convex. Often used in combination with some other term that describes the overall shape exclusive of ("before") flattening, e.g., depressed-globose. See also compressed (complanate), obcompressed. |
|
denticulate |
= small-toothed |
margin |
|
Finely dentate (toothed). See also crenate (scalloped), crenulate (small-scalloped), serrate (sawtoothed), serrulate (small-sawtoothed). |
|
dentate |
= toothed |
margin |
|
Having regularly spaced, angular convexities oriented more or less perpendicular to the generalized perimeter. See also crenate (scalloped), crenulate (small-scalloped), denticulate (small-toothed), serrate (sawtoothed), serrulate (small-sawtoothed). |
|
dens pl. dentes |
= tooth |
STRUCTURE |
|
One of a series of regularly spaced, angular, marginal convexities oriented more or less perpendicular to the generalized perimeter of a laminar structure. See also crena (scallop), crenule (scalloplet), sawtooth, sawtoothlet, toothlet. |
|
dendritic |
= tree-like |
architecture |
|
Like the branched axial structure of a tree. |
|
deltoid |
< three-angled, trigonous, triquetrous |
solid shape |
|
Three-angular (trigonous, triquetrous), broadest at the base, and regularly attenuate to an angular apex; equilaterally pyramidal with three lateral faces. See also obdeltoid. |
|
deltate |
|
plane shape |
|
Equilaterally triangular, broadest at the base, and regularly attenuate to an angular apex. See also obdeltate. |
|
deliquescent 2 |
|
texture |
|
Delicately fleshy and liquifying at maturity or with pressure; e.g., petals of Tradescantia (Commelinaceae). |
|
deliquescent 1 |
|
architecture |
axis, laminar vein |
Branching laterally and repeatedly such that the initial axis loses its prominence over the length of the structure and seems to dissolve into the succesive orders of branches. See also excurrent. |
|
dehiscent |
|
dehiscence |
|
Splitting or forming one or more apertures at maturity, the contents thereby released for dispersal. |
|
dehiscence |
|
CHARACTER |
|
Mode of opening (splitting or forming apertures). |
|
deflexed |
= reflexed |
orientation |
|
Abruptly bent outward (abaxially), downward, or backward at some point along its length. |
|
decussate |
|
arrangement |
|
Opposite with successive pairs radially oriented at right angles to one another, thus polystichous with four equidistant ranks. |
|
decurved |
|
orientation |
|
Curving abaxially. See also incurved. |
|
decurrent |
|
base |
laminar structure |
Having the lamina prolonged and adherent to the supporting axis beneath the point of vascular insertion, the prolonged portion termed a sterigma. |
|
decumbent |
|
habit |
axis |
Reclining upon the substrate proximally, ascending to erect distally. |
